Both JNTUH and JNTU Kakinda are reputed. Both have their advantages. But if we compare the two based on infrastructural facilities, faculty, and campus placement then JNTUH is a bit better than JNTUK. However, the environment is better than that of JNTUH. Here is a brief comparison of both the institutes. 

JNTUH will also offer better opportunities if you are considering pursuing studies abroad. But if you want a job after graduation, then either of these two institutes offers decent opportunities.